1121121042123 has 8 divisors (see below), whose sum is σ = 1515881972736. Its totient is φ = 736887069800.

The previous prime is 1121121042053. The next prime is 1121121042133. The reversal of 1121121042123 is 3212401211211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121121042123 - 2²⁰ = 1121119993547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121121042123.

It is not an unprimeable number, because it can be changed into a prime (1121121042133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631739323 + ... + 2631739748.

It is an arithmetic number, because the mean of its divisors is an integer number (189485246592).

Almost surely, 2^{1121121042123} is an apocalyptic number.

1121121042123 is a deficient number, since it is larger than the sum of its proper divisors (394760930613).

1121121042123 is an equidigital number, since it uses as much as digits as its factorization.

1121121042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263479145.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1121121042123 its reverse (3212401211211), we get a palindrome (4333522253334).

The spelling of 1121121042123 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, forty-two thousand, one hundred twenty-three".